Christian Franklin P:3

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Across
  1. 1. Backward motion of a planet
  2. 4. When many objects fly through the sky, all burning up before reaching Earth
  3. 5. Forms under the extreme pressures on Jupiter
  4. 6. A unit of measure that is equal to the distance between the Sun and the Earth
  5. 9. Planets that are formed from dust,rocks and other materials
  6. 12. A measure of how circular a planets orbit is
  7. 14. 20-200 times larger than the asteroid belt
  8. 16. Planets similar to Earth but made up of rocks and metals, creating a hard surface
  9. 17. The path that each planet creates while orbiting the sun
  10. 18. Lumps of rock and iron that orbit the sun
Down
  1. 2. Larger planets that are made up of mostly hydrogen and helium
  2. 3. Layers of Earth materials such as rock and metals
  3. 7. Too small to be considered a planet
  4. 8. Objects of matter that burn up before reaching Earth
  5. 10. Bodies of mass that hit the Earth
  6. 11. icy object that orbits the sun
  7. 13. A steep surface that is formed by ruptures
  8. 15. where asteroids orbit